diff options
Diffstat (limited to 'src/include/access/toast_internals.h')
| -rw-r--r-- | src/include/access/toast_internals.h | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/src/include/access/toast_internals.h b/src/include/access/toast_internals.h index cedfb890d8e..b4d068459ac 100644 --- a/src/include/access/toast_internals.h +++ b/src/include/access/toast_internals.h @@ -12,6 +12,7 @@ #ifndef TOAST_INTERNALS_H #define TOAST_INTERNALS_H +#include "access/toast_compression.h" #include "storage/lockdefs.h" #include "utils/relcache.h" #include "utils/snapshot.h" @@ -22,22 +23,26 @@ typedef struct toast_compress_header { int32 vl_len_; /* varlena header (do not touch directly!) */ - int32 rawsize; + uint32 tcinfo; /* 2 bits for compression method and 30 bits + * rawsize */ } toast_compress_header; /* * Utilities for manipulation of header information for compressed * toast entries. */ -#define TOAST_COMPRESS_HDRSZ ((int32) sizeof(toast_compress_header)) -#define TOAST_COMPRESS_RAWSIZE(ptr) (((toast_compress_header *) (ptr))->rawsize) -#define TOAST_COMPRESS_SIZE(ptr) ((int32) VARSIZE_ANY(ptr) - TOAST_COMPRESS_HDRSZ) -#define TOAST_COMPRESS_RAWDATA(ptr) \ - (((char *) (ptr)) + TOAST_COMPRESS_HDRSZ) -#define TOAST_COMPRESS_SET_RAWSIZE(ptr, len) \ - (((toast_compress_header *) (ptr))->rawsize = (len)) +#define TOAST_COMPRESS_METHOD(ptr) \ + (((toast_compress_header *) (ptr))->tcinfo >> VARLENA_RAWSIZE_BITS) +#define TOAST_COMPRESS_SET_SIZE_AND_METHOD(ptr, len, cm_method) \ + do { \ + Assert((len) > 0 && (len) <= VARLENA_RAWSIZE_MASK); \ + Assert((cm_method) == TOAST_PGLZ_COMPRESSION_ID || \ + (cm_method) == TOAST_LZ4_COMPRESSION_ID); \ + ((toast_compress_header *) (ptr))->tcinfo = \ + ((len) | (cm_method) << VARLENA_RAWSIZE_BITS); \ + } while (0) -extern Datum toast_compress_datum(Datum value); +extern Datum toast_compress_datum(Datum value, char cmethod); extern Oid toast_get_valid_index(Oid toastoid, LOCKMODE lock); extern void toast_delete_datum(Relation rel, Datum value, bool is_speculative); |